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[LeetCode] 208. Implement Trie (Prefix Tree)
Implement a trie with insert, search, and startsWith methods. Example: Note: You may assume that all inputs are consist of lowercase letters a-z. All ...
分类:其他好文   时间:2019-08-10 09:32:47    阅读次数:67
[Daily Coding Problem 250] Cryptarithmetic Puzzle
A cryptarithmetic puzzle is a mathematical game where the digits of some numbers are represented by letters. Each letter represents a unique digit. Fo ...
分类:其他好文   时间:2019-08-06 11:01:04    阅读次数:98
POJ-2255-Tree Recovery-求后序
Little Valentine liked playing with binary trees very much. Her favorite game was constructing randomly looking binary trees with capital letters in t ...
分类:其他好文   时间:2019-08-05 20:20:59    阅读次数:145
String and Times
String and Times 题目描述 Now you have a string consists of uppercase letters, two integers A and B. We call a substring wonderful substring when the time ...
分类:其他好文   时间:2019-08-03 21:19:35    阅读次数:84
Sorting It All Out (拓扑排序+思维)
An ascending sorted sequence of distinct values is one in which some form of a less-than operator is used to order the elements from smallest to large ...
分类:编程语言   时间:2019-07-28 22:44:35    阅读次数:140
[CF544E]Remembering Strings_状压dp
E. Remembering Strings 题目大意: You have multiset of n strings of the same length, consisting of lowercase English letters. We will say that those string ...
分类:其他好文   时间:2019-07-24 20:50:41    阅读次数:76
LeTax数学公式大全(完善中……)
1.Geek and Hebrew letters $\alpha$ \alpha $\beta$ \beta $\chi$ \chi $\delta$ \delta $\epsilon$ \epsilon $\eta$ \eta $\gamma$ \gamma $\iota$ \iota $\ka ...
分类:其他好文   时间:2019-07-23 13:05:10    阅读次数:131
C. Letters (前缀和、二分查找)
题目链接:http://codeforces.com/problemset/problem/978/C 题目的意思:告诉你几个宿舍,然后每个宿舍有多少个房间,每个房间的编号是一次从第一个加起来的,现在给你一些信封,信封上只有房间号,现在让我们判断这个房间是属于哪个宿舍,在这个宿舍里他是第几个房间。 ...
分类:其他好文   时间:2019-07-10 22:53:32    阅读次数:122
R绘制韦恩图 | Venn图
解决方案有好几种: 网页版,无脑绘图,就是麻烦,没有写代码方便 极简版,gplots::venn 文艺版,venneuler,不好安装rJava,参见Y叔 酷炫版,VennDiagram 1. 网页版的就不说了,非常简单,直接输入数据就行; 2. 极简版 3. 还没成功过,需安装rJava,代码如下 ...
分类:其他好文   时间:2019-07-08 13:21:44    阅读次数:186
LeetCode 79. Word Search单词搜索 (C++)
题目: Given a 2D board and a word, find if the word exists in the grid. The word can be constructed from letters of sequentially adjacent cell, where "a ...
分类:编程语言   时间:2019-07-03 18:24:57    阅读次数:147
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